I have never heard of that happening. Yet I know of far too many cases where this happens:

"In Grey Tantra, ejaculation of the semen is not considered important, yet in the long run, Grey Tantra is transformed into Black Tantra." - Samael Aun Weor, Light from Darkness

"Whosoever wants to attain the realization of their Being without Maithuna (Sexual Magic) is a definite candidate for the infernal worlds of the submerged mineral kingdom." - Samael Aun Weor, Light from Darkness

Personally, I could never trust the development of my soul with any "what if" or "maybe," especially when the teachings are extremely clear on this point. Is membership in a group so valuable that you are willing to risk your soul?